CN104181263A - Corona discharge atomization particle live-line detector - Google Patents
Corona discharge atomization particle live-line detector Download PDFInfo
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- CN104181263A CN104181263A CN201310204544.5A CN201310204544A CN104181263A CN 104181263 A CN104181263 A CN 104181263A CN 201310204544 A CN201310204544 A CN 201310204544A CN 104181263 A CN104181263 A CN 104181263A
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- discharge
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- electrometer
- corona discharge
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- 239000002245 particle Substances 0.000 title claims abstract description 20
- 238000000889 atomisation Methods 0.000 title claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims abstract description 19
- 239000007921 spray Substances 0.000 claims description 16
- 230000008020 evaporation Effects 0.000 claims description 15
- 239000012159 carrier gas Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000004811 liquid chromatography Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 239000012491 analyte Substances 0.000 description 5
- 238000005040 ion trap Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention relates to a liquid chromatography detector. The invention discloses a corona discharge atomization particle live-line detector, which includes an atomizer, an atomization chamber, an evaporating pipe, a discharge area, and an electrometer electrode chamber. The atomizer is connected to the atomization chamber, the atomization chamber is connected to the evaporating pipe, the evaporating pipe is communicated with the discharge area, and the discharge area is in connection with the electrometer electrode chamber. The detector provided by the invention has the advantages of high sensitivity, good reproducibility, consistent signal response, wide dynamic monitoring range and simple operation, and requires only one instrument to finish the analysis task needing to be completed on different detectors currently, thus improving the analysis efficiency.
Description
Technical field
The present invention relates to a kind of liquid chromatogram detector, be specifically related to a kind of corona discharge atomization particle band photodetector.
Background technology
Along with improving constantly of scientific and technical high speed development and industrial level, high-efficient liquid phase chromatogram technology has also extensively been adopted by many industries and field.Along with increasing of application, also more and more higher to the requirement of liquid chromatogram detector.Analyst wishes that a kind of detecting device should analyze many kinds of substance, highly sensitive again, favorable reproducibility, and signal response is consistent, dynamic monitoring wide ranges, the performance such as easy and simple to handle.Therefore, existing technology is difficult to make this device.
Summary of the invention
The object of this invention is to provide a kind of corona discharge atomization particle band photodetector, thereby highly sensitive, favorable reproducibility, signal response is consistent, dynamic monitoring wide ranges, easy and simple to handle, can make the analysis task that need to complete on different detecting devices at present as long as an equipment can complete, improved analysis efficiency.
In order to achieve the above object, the present invention has following technical scheme:
A kind of corona discharge atomization particle band photodetector of the present invention, comprise atomizer, spray chamber, evaporation tube, region of discharge, electrometer electrode chamber, described atomizer connects spray chamber, and described spray chamber is connected with evaporation tube, evaporation tube is communicated with region of discharge, and region of discharge is connected with electrometer electrode chamber.
Wherein, described region of discharge comprises effluve pin, the second tunnel carrier gas nozzle, the passage that leads to electrometer collecting chamber, described effluve pin is positioned at the top of region of discharge, and the second tunnel carrier gas nozzle is positioned at the right part of region of discharge, and the passage that leads to electrometer collecting chamber is fixed on the rear portion of region of discharge.
Wherein, described electrometer electrode chamber is the stainless-steel tube that sidewall has several holes.
Owing to having taked above technical scheme, the invention has the advantages that:
The present invention is highly sensitive, favorable reproducibility, and signal response is consistent, wide dynamic range, easy and simple to handle.The task that will just can complete on several detecting devices at present, as long as a detecting device of the present invention can complete, has improved analysis efficiency greatly.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of structure of the present invention;
Fig. 2 is the enlarged diagram of the vertical view of Fig. 1.
In figure: 1-atomizer; 2-spray chamber; 3-evaporation tube; 4-region of discharge; 5-electrometer collector chamber; 6-effluve pin; 7-the second tunnel carrier gas nozzle.
Embodiment
Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Referring to Fig. 1-Fig. 2, a kind of corona discharge atomization particle band photodetector of the present invention, by atomizer, spray chamber, evaporation tube, region of discharge, electrometer electrode chamber, formed, described atomizer connects spray chamber, described spray chamber is connected with evaporation tube, evaporation tube is communicated with region of discharge, and region of discharge is connected with electrometer electrode chamber.Wherein:
(1) atomizer: atomizer is, by high velocity air, the mobile phase injection from chromatographic column is become to droplet.Larger droplet forms large drop through impact bead collision, under the effect of gravity field, enters waste liquid bottle, and little droplet flows to downstream.Atomizer is that coaxial nozzle inner tube sucks detected solution, external pipe connection pressurized air or nitrogen, and on coaxial nozzle, directly fill ram
(2) spray chamber:, after atomizer, be immediately spray chamber, it is large volume cavity.Spray chamber 2 cavitys are large also to be shunk and is transitioned into evaporation tube, and spray chamber is provided with refrigerating plant, and further makes under the droplets agglomerate of larger particles at this refrigerating plant of this position.
(3) evaporation tube: evaporation tube is the elongated passageway of a special diameter and length, and import has contraction section, exports as expansion segment, and stage casing is elongated stainless steel passage.Evaporation tube effect makes just relatively to leave analyte surface from the solvent on the analyte surface of spray chamber.Become the particle compared with lightweight, as CH3OH2+.
(4) region of discharge: region of discharge is the charged region of analyte, it comprises effluve 6, the second tunnel carrier gas nozzles, and the passage that leads to electrometer collecting chamber.Effluve pin is made by platinum filament, applies-more than 5000V high pressure on it.The second tunnel carrier gas nozzle is daraf(reciprocal of farad) that nozzle.
(5) electrometer collector chamber: the in-built ion trap passive electrode of electrometer electrode chamber and electrometer passive electrode.Ion trap passive electrode is stainless-steel tube, apply on it-50V DC voltage, and electrometer passive electrode is sidewall porous, the stainless-steel tube that two ends are straight-through.Electrometer electrode chamber shell is provided with thermostatically-controlled equipment.Before electrometer electrode, establish a negative ion trap, so as in and the positive charge of lightweight particle, as O2+, N2+, H2O+, the positive charge of the particles such as CH3OH2+.Be finally electrometer passive electrode, amalyzing substances positive charge exchanges at this.All gas, the mobile phase of having vaporized, analytic sample is all through this emptying.
Principle of work of the present invention is, by high velocity carrier gas stream, the eluent in performance liquid chromatographic column is introduced to spray chamber through injector, and collides with impact bead.What after clashing into, form varies in size, the drop of the amalyzing substances particle of outsourcing mobile phase, and larger drop, in the impact of gravity field, discharges system by sewer pipe, and it is dry compared with droplet, with carrier gas, to flow into evaporation tube.In evaporation tube, the solvent of outsourcing is evaporated, and leaves dry analyte and together with volatile substance, enters halation region of discharge with more fine grain.And meanwhile, the positively charged ion that another road carrier gas forms under the impact of corona discharge also comes to bump in opposite directions.Body gas particle positively charged in the process of collision is transferred to positive charge on the particle colliding with it.The particulate matter that external surface area is large obtains compared with multi-charge.General analyte particle is larger, easily charged.
The gaseous ion that corona discharge produces, normally excessive, this gaseous ion enters electrometer chamber can make background current increase, and produces noise, floods signal.Therefore before electrometer is collected, a negative ion trap is set, collects the positive charge of lightweight particle, O2+ for example, N2+, H2O+, the positive charge of CH3OH2+.Finally remaining positively charged analyzed particle enters electrometer collector chamber, and electric charge is transferred to high impedance amplifier, sends chromatographic data software after amplification to.
Obviously, above-mentioned enforcement of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give all embodiments exhaustive.Every still row in protection scope of the present invention of apparent variation that technical scheme of the present invention extends out or change that belong to.
Claims (3)
1. a corona discharge atomization particle band photodetector, it is characterized in that: comprise atomizer, spray chamber, evaporation tube, region of discharge, electrometer electrode chamber, described atomizer connects spray chamber, described spray chamber is connected with evaporation tube, evaporation tube is communicated with region of discharge, and region of discharge is connected with electrometer electrode chamber.
2. a kind of corona discharge atomization particle band photodetector as claimed in claim 1, it is characterized in that: described region of discharge comprises effluve pin, the second tunnel carrier gas nozzle, the passage that leads to electrometer collecting chamber, described effluve pin is positioned at the top of region of discharge, the second tunnel carrier gas nozzle is positioned at the right part of region of discharge, and the passage that leads to electrometer collecting chamber is fixed on the rear portion of region of discharge.
3. a kind of corona discharge atomization particle band photodetector as claimed in claim 1, is characterized in that: described electrometer electrode chamber is the stainless-steel tube that sidewall has several holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310204544.5A CN104181263B (en) | 2013-05-28 | 2013-05-28 | Corona discharge atomization particle hot detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310204544.5A CN104181263B (en) | 2013-05-28 | 2013-05-28 | Corona discharge atomization particle hot detector |
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| Publication Number | Publication Date |
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| CN104181263A true CN104181263A (en) | 2014-12-03 |
| CN104181263B CN104181263B (en) | 2016-07-06 |
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| CN201310204544.5A Active CN104181263B (en) | 2013-05-28 | 2013-05-28 | Corona discharge atomization particle hot detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547931A (en) * | 2015-11-20 | 2016-05-04 | 武汉科技大学 | Corona electric field conductor particle oscillation amplitude detector and detection method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103355A (en) * | 1985-05-17 | 1986-11-12 | 株式会社岛津制作所 | The pick-up unit that the gas chromatograph is used |
| US4996424A (en) * | 1990-05-03 | 1991-02-26 | Hitachi, Ltd. | Atmospheric pressure ionization mass spectrometer |
| JPH04129158A (en) * | 1990-09-19 | 1992-04-30 | Hitachi Ltd | Mass analysis device |
| JPH10300722A (en) * | 1997-04-22 | 1998-11-13 | Hitachi Ltd | Mass spectrograph |
| CN1437760A (en) * | 1999-12-30 | 2003-08-20 | 阿德维昂生物科学公司 | Multiple electrospray device, system and methods |
| US20090101814A1 (en) * | 2007-10-18 | 2009-04-23 | Aviv Amirav | Capillary separated vaporization chamber and nozzle device and method |
| CN203241394U (en) * | 2013-05-28 | 2013-10-16 | 北京东西分析仪器有限公司 | Corona discharge atomized particle charge detector |
-
2013
- 2013-05-28 CN CN201310204544.5A patent/CN104181263B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103355A (en) * | 1985-05-17 | 1986-11-12 | 株式会社岛津制作所 | The pick-up unit that the gas chromatograph is used |
| US4996424A (en) * | 1990-05-03 | 1991-02-26 | Hitachi, Ltd. | Atmospheric pressure ionization mass spectrometer |
| JPH04129158A (en) * | 1990-09-19 | 1992-04-30 | Hitachi Ltd | Mass analysis device |
| JPH10300722A (en) * | 1997-04-22 | 1998-11-13 | Hitachi Ltd | Mass spectrograph |
| CN1437760A (en) * | 1999-12-30 | 2003-08-20 | 阿德维昂生物科学公司 | Multiple electrospray device, system and methods |
| US20090101814A1 (en) * | 2007-10-18 | 2009-04-23 | Aviv Amirav | Capillary separated vaporization chamber and nozzle device and method |
| CN203241394U (en) * | 2013-05-28 | 2013-10-16 | 北京东西分析仪器有限公司 | Corona discharge atomized particle charge detector |
Non-Patent Citations (1)
| Title |
|---|
| 汪正范 等: "《色谱联用技术》", 31 January 2001, article "电喷雾电离和大企业化学电离接口与质谱联机" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547931A (en) * | 2015-11-20 | 2016-05-04 | 武汉科技大学 | Corona electric field conductor particle oscillation amplitude detector and detection method thereof |
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| CN104181263B (en) | 2016-07-06 |
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Denomination of invention: Corona discharge atomization particle charged detector Granted publication date: 20160706 Pledgee: Industrial and Commercial Bank of China Limited Beijing Mentougou Branch Pledgor: EAST & WEST ANALYTICAL INSTRUMENTS, Inc. Registration number: Y2024980002979 |